As far as the color goes; the corset, stockings, heels, gloves, and underwear must all match. I prefer white the best, black the second best, light pink third, and light blue fourth. I don't really like red, green, purple, or brown. The eye shadow only has to be dark, like dark blue, with a little silver to make it shiny. Lipstick has to look good with the outfit.
Regarding underwear; I like frilly 50s-ish / french maid like undies. However, thong underwear doesn't turn me off, it's just a tad bit less arousing. Of course, I like big, but not insanely big, boobs. The corset should prop them up and emphasize them, but not break ribs, lol. The platform high heels must have a strap above the ankle, and not be the kind a girl can just slip on and off like flip-flops.
Last but not least, the girl herself. I like a girl who is especially white. Not albino white at all, just the kind that is not tan. That encompasses my ultimate fetish. Talk about specific, right? This whole fantasy started for me at the very beginning of puberty. Basically at the same time I started masturbating :o . Approximately 10 years ago.